lcmineqlem2 - Mathbox for metakunt

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Theorem lcmineqlem2 40038

Description: Part of lcm inequality lemma, this part eventually shows that F times the least common multiple of 1 to n is an integer. (Contributed by metakunt, 29-Apr-2024.)

**Hypotheses**
Ref	Expression
lcmineqlem2.1	⊢ 𝐹 = ∫(0[,]1)((𝑥↑(𝑀 − 1)) · ((1 − 𝑥)↑(𝑁 − 𝑀))) d𝑥
lcmineqlem2.2	⊢ (𝜑 → 𝑁 ∈ ℕ)
lcmineqlem2.3	⊢ (𝜑 → 𝑀 ∈ ℕ)
lcmineqlem2.4	⊢ (𝜑 → 𝑀 ≤ 𝑁)

**Assertion**
Ref	Expression
lcmineqlem2	⊢ (𝜑 → 𝐹 = Σ𝑘 ∈ (0...(𝑁 − 𝑀))(((-1↑𝑘) · ((𝑁 − 𝑀)C𝑘)) · ∫(0[,]1)((𝑥↑(𝑀 − 1)) · (𝑥↑𝑘)) d𝑥))

Distinct variable groups: 𝑘,𝑀,𝑥 𝑘,𝑁,𝑥 𝜑,𝑘,𝑥 Allowed substitution hints: 𝐹(𝑥,𝑘)

**Proof of Theorem lcmineqlem2**
Step	Hyp	Ref	Expression
1		lcmineqlem2.1	. . 3 ⊢ 𝐹 = ∫(0[,]1)((𝑥↑(𝑀 − 1)) · ((1 − 𝑥)↑(𝑁 − 𝑀))) d𝑥
2		lcmineqlem2.2	. . 3 ⊢ (𝜑 → 𝑁 ∈ ℕ)
3		lcmineqlem2.3	. . 3 ⊢ (𝜑 → 𝑀 ∈ ℕ)
4		lcmineqlem2.4	. . 3 ⊢ (𝜑 → 𝑀 ≤ 𝑁)
5	1, 2, 3, 4	lcmineqlem1 40037	. 2 ⊢ (𝜑 → 𝐹 = ∫(0[,]1)((𝑥↑(𝑀 − 1)) · Σ𝑘 ∈ (0...(𝑁 − 𝑀))(((-1↑𝑘) · ((𝑁 − 𝑀)C𝑘)) · (𝑥↑𝑘))) d𝑥)
6		eqid 2738	. . 3 ⊢ (0[,]1) = (0[,]1)
7		fzfid 13693	. . 3 ⊢ (𝜑 → (0...(𝑁 − 𝑀)) ∈ Fin)
8		0red 10978	. . 3 ⊢ (𝜑 → 0 ∈ ℝ)
9		1red 10976	. . 3 ⊢ (𝜑 → 1 ∈ ℝ)
10		unitsscn 13232	. . . . 5 ⊢ (0[,]1) ⊆ ℂ
11		resmpt 5945	. . . . 5 ⊢ ((0[,]1) ⊆ ℂ → ((𝑥 ∈ ℂ ↦ (𝑥↑(𝑀 − 1))) ↾ (0[,]1)) = (𝑥 ∈ (0[,]1) ↦ (𝑥↑(𝑀 − 1))))
12	10, 11	ax-mp 5	. . . 4 ⊢ ((𝑥 ∈ ℂ ↦ (𝑥↑(𝑀 − 1))) ↾ (0[,]1)) = (𝑥 ∈ (0[,]1) ↦ (𝑥↑(𝑀 − 1)))
13		nnm1nn0 12274	. . . . . 6 ⊢ (𝑀 ∈ ℕ → (𝑀 − 1) ∈ ℕ₀)
14		expcncf 24089	. . . . . 6 ⊢ ((𝑀 − 1) ∈ ℕ₀ → (𝑥 ∈ ℂ ↦ (𝑥↑(𝑀 − 1))) ∈ (ℂ–cn→ℂ))
15	3, 13, 14	3syl 18	. . . . 5 ⊢ (𝜑 → (𝑥 ∈ ℂ ↦ (𝑥↑(𝑀 − 1))) ∈ (ℂ–cn→ℂ))
16		rescncf 24060	. . . . . 6 ⊢ ((0[,]1) ⊆ ℂ → ((𝑥 ∈ ℂ ↦ (𝑥↑(𝑀 − 1))) ∈ (ℂ–cn→ℂ) → ((𝑥 ∈ ℂ ↦ (𝑥↑(𝑀 − 1))) ↾ (0[,]1)) ∈ ((0[,]1)–cn→ℂ)))
17	10, 16	ax-mp 5	. . . . 5 ⊢ ((𝑥 ∈ ℂ ↦ (𝑥↑(𝑀 − 1))) ∈ (ℂ–cn→ℂ) → ((𝑥 ∈ ℂ ↦ (𝑥↑(𝑀 − 1))) ↾ (0[,]1)) ∈ ((0[,]1)–cn→ℂ))
18	15, 17	syl 17	. . . 4 ⊢ (𝜑 → ((𝑥 ∈ ℂ ↦ (𝑥↑(𝑀 − 1))) ↾ (0[,]1)) ∈ ((0[,]1)–cn→ℂ))
19	12, 18	eqeltrrid 2844	. . 3 ⊢ (𝜑 → (𝑥 ∈ (0[,]1) ↦ (𝑥↑(𝑀 − 1))) ∈ ((0[,]1)–cn→ℂ))
20		elfznn0 13349	. . . . . 6 ⊢ (𝑘 ∈ (0...(𝑁 − 𝑀)) → 𝑘 ∈ ℕ₀)
21		neg1cn 12087	. . . . . . 7 ⊢ -1 ∈ ℂ
22		expcl 13800	. . . . . . 7 ⊢ ((-1 ∈ ℂ ∧ 𝑘 ∈ ℕ₀) → (-1↑𝑘) ∈ ℂ)
23	21, 22	mpan 687	. . . . . 6 ⊢ (𝑘 ∈ ℕ₀ → (-1↑𝑘) ∈ ℂ)
24	20, 23	syl 17	. . . . 5 ⊢ (𝑘 ∈ (0...(𝑁 − 𝑀)) → (-1↑𝑘) ∈ ℂ)
25	24	adantl 482	. . . 4 ⊢ ((𝜑 ∧ 𝑘 ∈ (0...(𝑁 − 𝑀))) → (-1↑𝑘) ∈ ℂ)
26	3	nnnn0d 12293	. . . . . . . 8 ⊢ (𝜑 → 𝑀 ∈ ℕ₀)
27	2	nnnn0d 12293	. . . . . . . 8 ⊢ (𝜑 → 𝑁 ∈ ℕ₀)
28		nn0sub 12283	. . . . . . . 8 ⊢ ((𝑀 ∈ ℕ₀ ∧ 𝑁 ∈ ℕ₀) → (𝑀 ≤ 𝑁 ↔ (𝑁 − 𝑀) ∈ ℕ₀))
29	26, 27, 28	syl2anc 584	. . . . . . 7 ⊢ (𝜑 → (𝑀 ≤ 𝑁 ↔ (𝑁 − 𝑀) ∈ ℕ₀))
30	4, 29	mpbid 231	. . . . . 6 ⊢ (𝜑 → (𝑁 − 𝑀) ∈ ℕ₀)
31		nn0z 12343	. . . . . . . 8 ⊢ (𝑘 ∈ ℕ₀ → 𝑘 ∈ ℤ)
32	20, 31	syl 17	. . . . . . 7 ⊢ (𝑘 ∈ (0...(𝑁 − 𝑀)) → 𝑘 ∈ ℤ)
33		bccl 14036	. . . . . . 7 ⊢ (((𝑁 − 𝑀) ∈ ℕ₀ ∧ 𝑘 ∈ ℤ) → ((𝑁 − 𝑀)C𝑘) ∈ ℕ₀)
34	32, 33	sylan2 593	. . . . . 6 ⊢ (((𝑁 − 𝑀) ∈ ℕ₀ ∧ 𝑘 ∈ (0...(𝑁 − 𝑀))) → ((𝑁 − 𝑀)C𝑘) ∈ ℕ₀)
35	30, 34	sylan 580	. . . . 5 ⊢ ((𝜑 ∧ 𝑘 ∈ (0...(𝑁 − 𝑀))) → ((𝑁 − 𝑀)C𝑘) ∈ ℕ₀)
36	35	nn0cnd 12295	. . . 4 ⊢ ((𝜑 ∧ 𝑘 ∈ (0...(𝑁 − 𝑀))) → ((𝑁 − 𝑀)C𝑘) ∈ ℂ)
37	25, 36	mulcld 10995	. . 3 ⊢ ((𝜑 ∧ 𝑘 ∈ (0...(𝑁 − 𝑀))) → ((-1↑𝑘) · ((𝑁 − 𝑀)C𝑘)) ∈ ℂ)
38		resmpt 5945	. . . . . 6 ⊢ ((0[,]1) ⊆ ℂ → ((𝑥 ∈ ℂ ↦ (𝑥↑𝑘)) ↾ (0[,]1)) = (𝑥 ∈ (0[,]1) ↦ (𝑥↑𝑘)))
39	10, 38	ax-mp 5	. . . . 5 ⊢ ((𝑥 ∈ ℂ ↦ (𝑥↑𝑘)) ↾ (0[,]1)) = (𝑥 ∈ (0[,]1) ↦ (𝑥↑𝑘))
40		expcncf 24089	. . . . . . 7 ⊢ (𝑘 ∈ ℕ₀ → (𝑥 ∈ ℂ ↦ (𝑥↑𝑘)) ∈ (ℂ–cn→ℂ))
41	20, 40	syl 17	. . . . . 6 ⊢ (𝑘 ∈ (0...(𝑁 − 𝑀)) → (𝑥 ∈ ℂ ↦ (𝑥↑𝑘)) ∈ (ℂ–cn→ℂ))
42		rescncf 24060	. . . . . . 7 ⊢ ((0[,]1) ⊆ ℂ → ((𝑥 ∈ ℂ ↦ (𝑥↑𝑘)) ∈ (ℂ–cn→ℂ) → ((𝑥 ∈ ℂ ↦ (𝑥↑𝑘)) ↾ (0[,]1)) ∈ ((0[,]1)–cn→ℂ)))
43	10, 42	ax-mp 5	. . . . . 6 ⊢ ((𝑥 ∈ ℂ ↦ (𝑥↑𝑘)) ∈ (ℂ–cn→ℂ) → ((𝑥 ∈ ℂ ↦ (𝑥↑𝑘)) ↾ (0[,]1)) ∈ ((0[,]1)–cn→ℂ))
44	41, 43	syl 17	. . . . 5 ⊢ (𝑘 ∈ (0...(𝑁 − 𝑀)) → ((𝑥 ∈ ℂ ↦ (𝑥↑𝑘)) ↾ (0[,]1)) ∈ ((0[,]1)–cn→ℂ))
45	39, 44	eqeltrrid 2844	. . . 4 ⊢ (𝑘 ∈ (0...(𝑁 − 𝑀)) → (𝑥 ∈ (0[,]1) ↦ (𝑥↑𝑘)) ∈ ((0[,]1)–cn→ℂ))
46	45	adantl 482	. . 3 ⊢ ((𝜑 ∧ 𝑘 ∈ (0...(𝑁 − 𝑀))) → (𝑥 ∈ (0[,]1) ↦ (𝑥↑𝑘)) ∈ ((0[,]1)–cn→ℂ))
47	6, 7, 8, 9, 19, 37, 46	3factsumint 40033	. 2 ⊢ (𝜑 → ∫(0[,]1)((𝑥↑(𝑀 − 1)) · Σ𝑘 ∈ (0...(𝑁 − 𝑀))(((-1↑𝑘) · ((𝑁 − 𝑀)C𝑘)) · (𝑥↑𝑘))) d𝑥 = Σ𝑘 ∈ (0...(𝑁 − 𝑀))(((-1↑𝑘) · ((𝑁 − 𝑀)C𝑘)) · ∫(0[,]1)((𝑥↑(𝑀 − 1)) · (𝑥↑𝑘)) d𝑥))
48	5, 47	eqtrd 2778	1 ⊢ (𝜑 → 𝐹 = Σ𝑘 ∈ (0...(𝑁 − 𝑀))(((-1↑𝑘) · ((𝑁 − 𝑀)C𝑘)) · ∫(0[,]1)((𝑥↑(𝑀 − 1)) · (𝑥↑𝑘)) d𝑥))

Colors of variables: wff setvar class

Syntax hints: → wi 4 ↔ wb 205 ∧ wa 396 = wceq 1539 ∈ wcel 2106 ⊆ wss 3887 class class class wbr 5074 ↦ cmpt 5157 ↾ cres 5591 (class class class)co 7275 ℂcc 10869 0cc0 10871 1c1 10872 · cmul 10876 ≤ cle 11010 − cmin 11205 -cneg 11206 ℕcn 11973 ℕ₀cn0 12233 ℤcz 12319 [,]cicc 13082 ...cfz 13239 ↑cexp 13782 Ccbc 14016 Σcsu 15397 –cn→ccncf 24039 ∫citg 24782

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1798 ax-4 1812 ax-5 1913 ax-6 1971 ax-7 2011 ax-8 2108 ax-9 2116 ax-10 2137 ax-11 2154 ax-12 2171 ax-ext 2709 ax-rep 5209 ax-sep 5223 ax-nul 5230 ax-pow 5288 ax-pr 5352 ax-un 7588 ax-inf2 9399 ax-cc 10191 ax-cnex 10927 ax-resscn 10928 ax-1cn 10929 ax-icn 10930 ax-addcl 10931 ax-addrcl 10932 ax-mulcl 10933 ax-mulrcl 10934 ax-mulcom 10935 ax-addass 10936 ax-mulass 10937 ax-distr 10938 ax-i2m1 10939 ax-1ne0 10940 ax-1rid 10941 ax-rnegex 10942 ax-rrecex 10943 ax-cnre 10944 ax-pre-lttri 10945 ax-pre-lttrn 10946 ax-pre-ltadd 10947 ax-pre-mulgt0 10948 ax-pre-sup 10949 ax-addf 10950 ax-mulf 10951

This theorem depends on definitions: df-bi 206 df-an 397 df-or 845 df-3or 1087 df-3an 1088 df-tru 1542 df-fal 1552 df-ex 1783 df-nf 1787 df-sb 2068 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2816 df-nfc 2889 df-ne 2944 df-nel 3050 df-ral 3069 df-rex 3070 df-rmo 3071 df-reu 3072 df-rab 3073 df-v 3434 df-sbc 3717 df-csb 3833 df-dif 3890 df-un 3892 df-in 3894 df-ss 3904 df-pss 3906 df-nul 4257 df-if 4460 df-pw 4535 df-sn 4562 df-pr 4564 df-tp 4566 df-op 4568 df-uni 4840 df-int 4880 df-iun 4926 df-iin 4927 df-disj 5040 df-br 5075 df-opab 5137 df-mpt 5158 df-tr 5192 df-id 5489 df-eprel 5495 df-po 5503 df-so 5504 df-fr 5544 df-se 5545 df-we 5546 df-xp 5595 df-rel 5596 df-cnv 5597 df-co 5598 df-dm 5599 df-rn 5600 df-res 5601 df-ima 5602 df-pred 6202 df-ord 6269 df-on 6270 df-lim 6271 df-suc 6272 df-iota 6391 df-fun 6435 df-fn 6436 df-f 6437 df-f1 6438 df-fo 6439 df-f1o 6440 df-fv 6441 df-isom 6442 df-riota 7232 df-ov 7278 df-oprab 7279 df-mpo 7280 df-of 7533 df-ofr 7534 df-om 7713 df-1st 7831 df-2nd 7832 df-supp 7978 df-frecs 8097 df-wrecs 8128 df-recs 8202 df-rdg 8241 df-1o 8297 df-2o 8298 df-oadd 8301 df-omul 8302 df-er 8498 df-map 8617 df-pm 8618 df-ixp 8686 df-en 8734 df-dom 8735 df-sdom 8736 df-fin 8737 df-fsupp 9129 df-fi 9170 df-sup 9201 df-inf 9202 df-oi 9269 df-dju 9659 df-card 9697 df-acn 9700 df-pnf 11011 df-mnf 11012 df-xr 11013 df-ltxr 11014 df-le 11015 df-sub 11207 df-neg 11208 df-div 11633 df-nn 11974 df-2 12036 df-3 12037 df-4 12038 df-5 12039 df-6 12040 df-7 12041 df-8 12042 df-9 12043 df-n0 12234 df-z 12320 df-dec 12438 df-uz 12583 df-q 12689 df-rp 12731 df-xneg 12848 df-xadd 12849 df-xmul 12850 df-ioo 13083 df-ioc 13084 df-ico 13085 df-icc 13086 df-fz 13240 df-fzo 13383 df-fl 13512 df-mod 13590 df-seq 13722 df-exp 13783 df-fac 13988 df-bc 14017 df-hash 14045 df-cj 14810 df-re 14811 df-im 14812 df-sqrt 14946 df-abs 14947 df-limsup 15180 df-clim 15197 df-rlim 15198 df-sum 15398 df-struct 16848 df-sets 16865 df-slot 16883 df-ndx 16895 df-base 16913 df-ress 16942 df-plusg 16975 df-mulr 16976 df-starv 16977 df-sca 16978 df-vsca 16979 df-ip 16980 df-tset 16981 df-ple 16982 df-ds 16984 df-unif 16985 df-hom 16986 df-cco 16987 df-rest 17133 df-topn 17134 df-0g 17152 df-gsum 17153 df-topgen 17154 df-pt 17155 df-prds 17158 df-xrs 17213 df-qtop 17218 df-imas 17219 df-xps 17221 df-mre 17295 df-mrc 17296 df-acs 17298 df-mgm 18326 df-sgrp 18375 df-mnd 18386 df-submnd 18431 df-mulg 18701 df-cntz 18923 df-cmn 19388 df-psmet 20589 df-xmet 20590 df-met 20591 df-bl 20592 df-mopn 20593 df-cnfld 20598 df-top 22043 df-topon 22060 df-topsp 22082 df-bases 22096 df-cn 22378 df-cnp 22379 df-cmp 22538 df-tx 22713 df-hmeo 22906 df-xms 23473 df-ms 23474 df-tms 23475 df-cncf 24041 df-ovol 24628 df-vol 24629 df-mbf 24783 df-itg1 24784 df-itg2 24785 df-ibl 24786 df-itg 24787 df-0p 24834

This theorem is referenced by: lcmineqlem3 40039

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